ALBANY, N.Y. (AP) — Corruption and a rigged political system are battle cries of both sides in a debate over whether New Yorkers should vote this fall to rewrite the state constitution.Advocates of a "yes" vote say a constitutional convention is the only way to fix dysfunction, corruption and inefficiency in government and throw the bums out of Albany.Environmental groups fear a convention could open the door to delete or weaken protections for clean air and water, healthy forests and the 6-million-acre (2.4-million hectare) Adirondack Park.The real money involved in this is the labor unions that are trying to block a convention because they have great sway with this government and don't want it to change, said Gerald Benjamin, a political science professor and co-editor of a new book, New York's Broken Constitution:Right-to-Life and Planned Parenthood; the Conservative Party and left-leaning Working Families Party; LGBT Network and New York State Rifle and Pistol Association.Benjamin said a convention is the only way to fix problems with administration of elections, campaign finance, the structure of the court system and the Legislature, which he believes would be more effective with one house instead of two.